<!doctype html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <title>程序启动loading</title>
        <style>
            html,
            body,
            .container {
                background: transparent;
                width: 100%;
                height: 100%;
                overflow: hidden;
                padding: 0;
                margin: 0;
                box-shadow: none !important;
            }
            .container {
                color: white;
                font-size: 30px;
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .spinner {
                width: 40px;
                height: 40px;
                background-color: #a855f7;

                margin: 100px auto;
                -webkit-animation: sk-rotateplane 1.2s infinite ease-in-out;
                animation: sk-rotateplane 1.2s infinite ease-in-out;
            }

            @-webkit-keyframes sk-rotateplane {
                0% {
                    -webkit-transform: perspective(120px);
                }
                50% {
                    -webkit-transform: perspective(120px) rotateY(180deg);
                }
                100% {
                    -webkit-transform: perspective(120px) rotateY(180deg)
                        rotateX(180deg);
                }
            }

            @keyframes sk-rotateplane {
                0% {
                    transform: perspective(120px) rotateX(0deg) rotateY(0deg);
                    -webkit-transform: perspective(120px) rotateX(0deg)
                        rotateY(0deg);
                }
                50% {
                    transform: perspective(120px) rotateX(-180.1deg)
                        rotateY(0deg);
                    -webkit-transform: perspective(120px) rotateX(-180.1deg)
                        rotateY(0deg);
                }
                100% {
                    transform: perspective(120px) rotateX(-180deg)
                        rotateY(-179.9deg);
                    -webkit-transform: perspective(120px) rotateX(-180deg)
                        rotateY(-179.9deg);
                }
            }
        </style>
    </head>
    <body>
        <div class="container">
            <div class="spinner"></div>
        </div>
        <script>
            window.addEventListener(
                'contextmenu',
                (e) => e.preventDefault(),
                false,
            );
        </script>
    </body>
</html>
